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Johannes T.B. Overvelde

Johannes T.B. Overvelde
AMOLF & Eindhoven University of Technology

Doctor of Philosophy

About

30
Publications
58,356
Reads
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3,005
Citations
Additional affiliations
September 2020 - November 2020
Eindhoven University of Technology
Position
  • Professor (Associate)
May 2016 - present
AMOLF
Position
  • Principal Investigator
Description
  • Full resume: http://www.overvelde.com/wp-content/uploads/2019/06/JTB-Overvelde-CV-1.pdf
September 2012 - April 2016
Harvard University
Position
  • PhD Student

Publications

Publications (30)
Article
Full-text available
Metamaterials are artificial materials that derive their unusual properties from their periodic architecture. Some metamaterials can deform their internal structure to switch between different properties. However, the precise control of these deformations remains a challenge, as these structures often exhibit non-linear mechanical behavior. We intr...
Article
Full-text available
Significance In the last century, robots have been revolutionizing our lives, augmenting human actions with greater precision and repeatability. Unfortunately, most robotic systems can only operate in controlled environments. While increasing the complexity of the centralized controller is an instinctive direction to enable robots that are capable...
Article
Full-text available
Despite exciting developments in soft robotics, fully autonomous systems remain elusive. Fluidic circuits could enable fully embedded control of soft robots without using electronics. In this work, we introduce a simple and compact soft valve with intentional hysteresis, analogous to an electronic relaxation oscillator. By integrating the valve wit...
Article
Many patients with end-stage heart disease die because of the scarcity of donor hearts. A total artificial heart (TAH), an implantable machine that replaces the heart, has so far been successfully used in over 1,700 patients as a temporary life-saving technology for bridging to heart transplantation. However, after more than six decades of research...
Article
Full-text available
Rather than depending on material composition to primarily dictate performance metrics, metamaterials can leverage geometry to achieve specific properties of interest. For example, reconfigurable metamaterials have enabled programmable shape transformations, tunable mechanical properties, and energy absorption. While several methods exist to fabric...
Article
An interplay between deswelling and buckling in a polymer gel is harnessed to achieve sequential snap events for repeatable jumping motion, opening the door to autonomously moving soft robots.
Article
Full-text available
Scatterometry is an optical metrology technique, in which light scattered from a specifically designed grating stack (overlay target) is measured in the far-field. Using 1D periodic overlay target designs the technique has been shown to have nanometer-scale sensitivity to spatial misalignments of subsequent patterned layers, which are also known as...
Article
Full-text available
Metamaterials are man‐made materials which get their properties from their structure rather than their chemical composition. Their mesostructure is specifically designed to create functionalities not found in nature. However, despite the broad variety of metamaterials developed in recent years, a straightforward procedure to design these complex ma...
Article
A multi-nozzle system has been devised that allows the 3D printing of objects using several viscous materials, thereby allowing control over the material properties of objects at the submillimetre scale. A multinozzle system for the 3D printing of voxellated objects. MM3D printheads
Article
Full-text available
Soft robots powered by pressurized fluid have recently enabled a variety of innovative applications in areas as diverse as space exploration, search and rescue systems, biomimetics, medical surgery, and rehabilitation. Although soft robots have been demonstrated to be capable of performing a number of different tasks, they typically require indepen...
Article
Full-text available
In viscoelastic materials, individually short-lived bonds collectively result in a mechanical resistance which is long-lived but finite, as ultimately cracks appear. Here we provide a microscopic mechanism by which cracks emerge from the nonlinear local bond dynamics. This mechanism is different from crack initiation in solids, which is governed by...
Article
Full-text available
Advances in fabrication technologies are enabling the production of architected materials with unprecedented properties. Most such materials are characterized by a fixed geometry, but in the design of some materials it is possible to incorporate internal mechanisms capable of reconfiguring their spatial architecture, and in this way to enable tunab...
Article
Full-text available
Soft bending actuators are inherently compliant, compact, and lightweight. They are preferable candidates over rigid actuators for robotic applications ranging from physical human interaction to delicate object manipulation. However, characterizing and predicting their behaviors are challenging due to the material nonlinearities and the complex mot...
Article
Full-text available
We combine numerical simulations and experiments to design a new class of reconfigurable waveguides based on three-dimensional origami-inspired metamaterials. Our strategy builds on the fact that the rigid plates and hinges forming these structures define networks of tubes that can be easily reconfigured. As such, they provide an ideal platform to...
Article
Full-text available
A range of instabilities can occur in soft bodies that undergo large deformation. While most of them arise under compressive forces, it has previously been shown analytically that a tensile instability can occur in an elastic block subjected to equitriaxial tension. Guided by this result, we conducted centimeter-scale experiments on thick elastomer...
Thesis
Full-text available
The use of soft materials has led to the development of soft devices that have the potential to be more robust, adaptable, and safer for human interaction than traditional rigid systems. State-of-the-art developments push these robotic systems towards applications such as soft rehabilitation and diagnostic devices, exoskeletons for gait assistance,...
Article
Full-text available
Reconfigurable devices, whose shape can be drastically altered, are central to expandable shelters, deployable space structures, reversible encapsulation systems and medical tools and robots. All these applications require structures whose shape can be actively controlled, both for deployment and to conform to the surrounding environment. While mos...
Article
Full-text available
Soft, inflatable segments are the active elements responsible for the actuation of soft machines and robots. Although current designs of fluidic actuators achieve motion with large amplitudes, they require large amounts of supplied volume, limiting their speed and compactness. To circumvent these limitations, here we embrace instabilities and show...
Article
Full-text available
A mechanically tunable macroscale replica of the gyroid photonic crystal found in the Parides sesostris butterfly's wing scales is systematically characterized. By monitoring both photonic frequency changes and the distribution of stress fields within the compressed structure, electromagnetic transmission features are found and can be frequency-tun...
Research
Full-text available
Scripting is a powerful tool that allows you to combine the functionality of the Graphical User Interface (GUI) of Abaqus and the power of the programming language Python. This manual is an introduction to Abaqus script from a practical viewpoint and it tries to explain an easy, fast way to start scripting. If you don’t have experience with the Aba...
Article
Full-text available
Roboticists have begun to design biologically inspired robots with soft or partially soft bodies, which have the potential to be more robust and adaptable, and safer for human interaction, than traditional rigid robots. However, key challenges in the design and manufacture of soft robots include the complex fabrication processes and the interfacing...
Article
Full-text available
Soft fluidic actuators consisting of elastomeric matrices with embedded flexible materials are of particular interest to the robotics community because they are affordable and can be easily customized to a given application. However, the significant potential of such actuators is currently limited as their design has typically been based on intuiti...
Article
Full-text available
Soft sensors comprising a flexible matrix with embedded circuit elements can undergo large deformations while maintaining adequate performance. These devices have attracted considerable interest for their ability to be integrated with the human body and have enabled the design of skin-like health monitoring devices, sensing suits, and soft active o...
Article
Full-text available
We uncover how nonlinearities dramatically influence the buckling of elastic beams by means of experiments, simulations and theory. We show that sufficiently wide, ordinary elastic beams exhibit discontinuous buckling, an unstable form of buckling where the post-buckling stiffness is negative. We develop a 1D model that matches our data and identif...
Article
Full-text available
This Communication presents a class of soft actuated materials that can achieve lifelike motion. By embedding pneumatic actuators in a soft material inspired by biological muscle fibril architecture, and developing a simple finite element simulation of same, we can achieve tunable biomimetic motion with fully soft structures, exemplified here by an...
Article
The cover picture shows the concept and inspiration for a soft actuated material, in this case the muscular structure of the heart. The image depicts the muscular fibers from the heart inspiring the numerical modeling of the actuators and the design of contractile actuators embedded in a soft matrix, as described in the work by C. J. Walsh and co-w...
Article
Full-text available
By introducing a periodic array of pores in an elastic matrix, instabilities with wavelengths that are of the order of the size of the microstructure can be triggered. Interestingly, these instabilities can be utilized to design a novel class of responsive materials. Possible applications include materials with unusual properties such as negative P...
Article
We exploited mechanical instability in shape memory polymer (SMP) membranes consisting of a hexagonal array of micron-sized circular holes and demonstrated dramatic color switching as a result of pattern transformation. When hot-pressed, the circular holes were deformed to an array of elliptical slits (with width of tens of nanometers), and further...
Article
Soft cellular structures that comprise a solid matrix with a square array of holes open avenues for the design of novel soft and foldable structures. Our results demonstrate that by simply changing the shape of the holes the response of porous structure can be easily tuned and soft structures with optimal compaction can be designed.
Thesis
Full-text available
In this thesis the possibility of a flow-inspired Meshless Method based topology optimization method is explored. More specific, an investigation is carried out to the possibility of using the position of the nodes from the meshless EFG method as design variables in topology optimization. In order to determine the possibility of using the nodal pos...

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Projects

Project (1)
Project
A Total Artificial Heart (TAH) completely replaces a patient’s heart in a procedure similar to a heart transplant. The Hybrid Heart project aims to optimize performance of its TAH by developing and combining new tissue engineering, transcutaneous energy transfer and soft robotics concepts. Being part of the Soft Robotic Matter group at AMOLF, I focus on the fundamentals of rationally designed soft sensors, actuators, etc. and their application. Specifically I work on novel control mechanisms for the soft robotics heart, with a focus on intrinsically stable systems without the use of electronics.